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Configurations and methods for gas condensate separation from high-pressure hydrocarbon mixtures

  • US 9,132,379 B2
  • Filed: 11/06/2007
  • Issued: 09/15/2015
  • Est. Priority Date: 11/09/2006
  • Status: Active Grant
First Claim
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1. A method of processing a high pressure hydrocarbon feed in a refluxed absorber and a stabilizer, wherein the hydrocarbon feed includes at least 0.5 mol % of C6+ hydrocarbons, comprising:

  • separating the hydrocarbon feed into a vapor portion and a liquid portion;

    feeding the vapor portion and the liquid portion of the high pressure hydrocarbon feed to the refluxed absorber, cooling an overhead product of the refluxed absorber to produce a two-phase mixture, and separating the two-phase mixture to generate a reflux to the refluxed absorber,wherein cooling the overhead product is performed to maintain an overhead temperature of the refluxed absorber at or below hydrate temperature of the hydrocarbon feed;

    wherein the refluxed absorber produces a C6+ enriched bottom product and a C6+ depleted overhead product;

    separating the C6+ enriched bottom product in a first separator into a liquid portion of the C6+ enriched bottom product and a vapor portion of the C6+ enriched bottom product;

    feeding the liquid portion of the C6+ enriched bottom product to the stabilizer;

    feeding the vapor portion of the C6+ enriched bottom product to a second separator;

    feeding a stabilizer overhead to the second separator;

    feeding a stripping medium to a bottom portion of the refluxed absorber, wherein the stripping medium is at least in part formed from a vapor portion of the stabilizer overhead; and

    ,feeding a scrubbing medium above the bottom portion of the refluxed absorber, wherein the scrubbing medium is at least in part formed from a liquid portion of the stabilizer overhead.

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